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公开(公告)号：US6043917A
公开(公告)日：2000-03-28
申请号：US991683
申请日：1997-12-16
CPC分类号： G01D5/35383 , G01H9/00 , G01H9/004 , G01V1/201 , G10K11/008
摘要： A telemetry system for receiving data from large arrays of sensors, in which the sensors are located in an unprotected environment, is implemented using fiber optic components. Laser sources, located in a protected environment, transmit light through the boundary separating the protected environment from the unprotected one. The light is then split into a number of beams and fed to electro-optical modulators, where it is modulated in response to electrical signals received from the sensors. The modulated light signals are then wavelength-division multiplexed and transmitted back through the environment boundary, where they are amplified, demultiplexed and converted to electrical signals. Multiplexing reduces the number of boundary penetrations, and the use of highly stable electro-optical modulators eliminates the need for signal conditioning electronics at each sensor. This optical approach is particularly beneficial in an underwater application, such as a submarine receiving data from a large array of acoustic sensors, where it is desired that hull penetrations be minimized and the underwater components be highly reliable and stable.
摘要翻译： 用于从大型传感器阵列接收数据的遥测系统使用光纤组件实现传感器位于未受保护环境中的数据。 位于受保护环境的激光源通过将受保护的环境与未受保护的环境分开的边界传递光。 然后将光分离成多个光束并馈送到电光调制器，其中响应于从传感器接收的电信号进行调制。 调制的光信号然后被波分复用并通过环境边界传回，在那里被放大，解复用并转换成电信号。 复用减少了边界穿透的数量，并且使用高度稳定的电光调制器消除了在每个传感器处对信号调理电路的需要。 这种光学方法在诸如海底接收来自大量声学传感器的数据的水下应用中是特别有益的，其中希望船体穿透被最小化并且水下部件是高度可靠和稳定的。
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公开(公告)号：US4770485A
公开(公告)日：1988-09-13
申请号：US46805
申请日：1987-05-05
IPC分类号： G02B26/08 , G02B6/24 , G02B6/28 , G02B6/42 , H04B10/00 , H04B10/02 , H04B10/13 , H04B10/28 , G02B6/32 , G02F1/00 , H04B9/00
CPC分类号： H04B10/2581 , G02B6/24 , G02B6/2817 , G02B6/425
摘要： An apparatus for launching separate mode groups comprising an LED (13) and a collimator (C.sub.1) for providing a first beam (19) of collimated light and an LED (15) and a collimator (C.sub.2) for providing a second beam (23) of collimated light. The beams (19) and (23) intersect and form an acute angle A. A light guide (R.sub.1) has a receiving face (27) at the intersection of the beams (19) and (23) so that the beams are launched into the light guide as first and second mode groups, respectively.
摘要翻译： 一种用于发射分离模式组的装置，包括用于提供准直光的第一光束（19）和用于提供第二光束（23）的LED（15）和准直器（C2））的LED（13）和准直器（C1） 准直光。 光束（19）和（23）相交并形成锐角A.光导（R1）在光束（19）和（23）的交叉处具有接收面（27），使得光束被引入 光导分别为第一和第二模式组。
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3.发明授权System and method for reducing interferometric distortion and relative intensity noise in directly modulated fiber optic links 有权用于减少直接调制光纤链路中的干涉失真和相对强度噪声的系统和方法公开(公告)号：US07725043B2
公开(公告)日：2010-05-25
申请号：US10960159
申请日：2004-10-07
CPC分类号： H04B10/504 , H01S5/06817
摘要： A laser transmitter with a feedback control loop for minimizing noise. The novel laser transmitter includes a laser, an external reflector adapted to form an extended cavity to the laser, and a feedback control loop adapted to detect noise in the laser and in accordance therewith, adjust the optical phase of the extended cavity such that the noise is at a desired level. The optical phase of the extended cavity is adjusted by adjusting an operating parameter of the laser, such as its bias current. In an illustrative embodiment, the feedback control loop is adapted to compute the rate of change of the noise with respect to bias current and in accordance therewith, adjust the bias current of the laser such that relative intensity noise and interferometric intermodulation distortion are simultaneously minimized.
摘要翻译： 具有反馈控制回路的激光发射器，用于最小化噪声。 新颖的激光发射器包括激光器，适于形成到激光器的延伸空腔的外部反射器，以及适于检测激光器中的噪声的反馈控制回路，并且根据该激光器调节扩展腔体的光学相位，使得噪声 处于所需的水平。 通过调整激光器的工作参数（如偏置电流）来调节扩展腔的光学相位。 在说明性实施例中，反馈控制环路适于计算噪声相对于偏置电流的变化率，并且根据其调整激光器的偏置电流，使得相对强度噪声和干涉式互调失真同时最小化。
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公开(公告)号：US5796504A
公开(公告)日：1998-08-18
申请号：US596898
申请日：1996-03-13
CPC分类号： G01D5/35383 , G01H9/00 , G01H9/004 , G01V1/201 , G10K11/008
摘要： A telemetry system for receiving data from large arrays of sensors, in which the sensors are located in an unprotected environment, is implemented using fiber optic components. Laser sources, located in a protected environment, transmit light through the boundary separating the protected environment from the unprotected one. The light is then split into a number of beams and fed to electro-optical modulators, where it is modulated in response to electrical signals received from the sensors. The modulated light signals are then wavelength-division multiplexed and transmitted back through the environment boundary, where they are amplified, demultiplexed and converted to electrical signals. Multiplexing reduces the number of boundary penetrations, and the use of highly stable electro-optical modulators eliminates the need for signal conditioning electronics at each sensor. This optical approach is particularly beneficial in an underwater application, such as a submarine receiving data from a large array of acoustic sensors, where it is desired that hull penetrations be minimized and the underwater components be highly reliable and stable.
摘要翻译： 用于从大型传感器阵列接收数据的遥测系统使用光纤组件实现传感器位于未受保护环境中的数据。 位于受保护环境的激光源通过将受保护的环境与未受保护的环境分开的边界传递光。 然后将光分离成多个光束并馈送到电光调制器，其中响应于从传感器接收的电信号进行调制。 调制的光信号然后被波分复用并通过环境边界传回，在那里被放大，解复用并转换成电信号。 复用减少了边界穿透的数量，并且使用高度稳定的电光调制器消除了在每个传感器处对信号调理电路的需要。 这种光学方法在诸如海底接收来自大量声学传感器的数据的水下应用中是特别有益的，其中希望船体穿透被最小化并且水下部件是高度可靠和稳定的。
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5.发明授权Method and apparatus for preserving modes in fiber optic connections requiring angular translation 失效用于保持需要角度平移的光纤连接中的模式的方法和装置
公开(公告)号：US4909583A
公开(公告)日：1990-03-20
申请号：US293736
申请日：1989-01-05
CPC分类号： G02B6/14 , G02B6/3616 , G02B6/4457 , G02B6/3827
摘要： A mode preserving apparatus (11) comprising a supporting structure (13), an optical fiber (15), a pin connector (17) for positioning a first region of the optical fiber at a first location and a strain-relief mechanism (19) for positioning a second region of the fiber at a second location. A bobbin assembly (21), includng a first bobbin (23), is mounted on the supporting structure (13) for movement relative to the first and second locations. The optical fiber (15) extends along a path from the first location at least part way around the bobbin (23) to the second location so that movement of the bobbin (23) relative to the first and second locations alters the configuration of the path.
摘要翻译： 一种模式保存装置（11），包括支撑结构（13），光纤（15），用于将光纤的第一区域定位在第一位置处的引脚连接器（17）和应变消除机构（19） 用于将光纤的第二区域定位在第二位置。 包括第一线轴（23）的线轴组件（21）安装在支撑结构（13）上，用于相对于第一和第二位置移动。 光纤（15）沿着从第一位置至少部分绕线轴（23）的路径延伸到第二位置，使得线轴（23）相对于第一和第二位置的运动改变路径的配置 。
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